[T3] Possible Generator problem

[Daniel K. Du Vall]

Update on this problem. Turns out that the regulator was probably still good but the generator on the other hand was wearing out the brushes in an unequal manner.
Once it was pulled I was able to see that it must not have been machined properly or the stator was wearing also unevenly as it was very blackened on about 1/3 to 1/2 and the rest was copper colored. Sad thing is this generator was a bosch remanufactured unit and had very few miles on it as I had issues with the FI that prevented me from driving it since I put it in back in colorado.

Well anyways I did the unthinkable and converted to an alternator retrofit kit and all is well even helped with the EMI I was fighting with the Megasquirt ECU and no more dimming of the lights when coming to an idle which helps with running the inverter I use to run the laptop.  

Thanks for all the input I received it was very helpful.

Daniel Du Vall


________________________________________
From: type3-vwtype3.org <type3-vwtype3.org-bounces at lists.vwtype3.org> on behalf of Daniel K. Du Vall <dduvall at 1peter4-10.org>
Sent: Friday, January 1, 2016 12:51 PM
To: type3 at vwtype3.org
Subject: Re: [T3] Possible Generator problem

Some PIC:

http://volkswageninsanity.us/Postings/SB%20Elec/



-----Original Message-----
From: Daniel K. Du Vall
Sent: Friday, January 1, 2016 12:02 PM
To: 'type3 at vwtype3.org' <type3 at vwtype3.org>
Subject: RE: [T3] Possible Generator problem

Well I have no spare bulbs so I barrowed one of the two turn signal bulbs and the (G) lights up and does not go out after start so it's on as well as the (B) light.  While I was running I tested the voltage at the batt and its now at 11.0 volts and no change when rpm is increased. I want back to the Generator and tested from the red/white cable and I get about 1.3 volts. I am now suspecting the regulator has failed. I have the regulator out now and will get some pics of it and the light bulb holder. Is there any way to tell how old this regulator is? It is a BOSCH that the yellow wiring sticker on it all in German except for starter.  Batterie and Dynamo are spelt exactly like this on it also.

On a side question in the bulb are for the fuel gauge there are a few smaller sockets that have no bulbs should they? I have never been happy with how lit the gauges are but it's been worse than the others. Since I am into this part now I am thinking of getting LED replacements and get that out of the way.

-----Original Message-----
From: type3-vwtype3.org [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Jim Adney
Sent: Friday, January 1, 2016 11:44 AM
To: type3 at vwtype3.org
Subject: Re: [T3] Possible Generator problem

On 1 Jan 2016 at 16:21, Daniel K. Du Vall wrote:

> Found this does it apply to 72 also?
>
> http://www.vwtype3.org/info-gauge-removal.txt

Yes, that works for all years. For the gas gauge, it's best to pull the whole gauge slightly out of the dash, then remove the metal gauge part from the plastic electrical part on the back. Then you can easily access all the bulbs in their sockets.

If your generator bulb is okay, suspect a problem with the wiring between it and the VR.

Your problem makes me wonder if you're losing all power to some part of your system occasionally.

If you're using the OE D-jet FI main power relay to power the MegaSquirt, make sure the relay mounting screw is tight. The relay depends on that to give a good ground to its ground wire.

Next time this happens, see if wiggling the key has any effect. It's possible, but not likely, that you have an ignition switch problem.

--
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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